Knock Knock

About Knock Knock

We have been the leading provider of premium uPVC, aluminum doors & windows for the last 14 years. We are known under the brand name Squares Doors & Window Systems. An associated company. We wanted to leverage our rich experience of delivering 1.2 million windows and serving 2500+ clients to create a sustainable green door that would best replace a traditional wooden door. We wanted the product to be a combination of supermaterial properties that are often missing in a wooded door without losing the best part of the wood which is its natural beauty. After extensive research and trying several options, we finally found our answer - -Knock Knock- Knock Knock is our latest offering in the premium doors segment. ARK Engineering is the parent company that holds the Knock Knock brand.